<template>
	<view class="cart-container" v-if="cart.length !== 0">
    <my-address></my-address>
    <!-- 购物车标题区域 -->
		<view class="cart-title">
		  <uni-icons type="shop" size="18"></uni-icons>
      <text class="cart-title-text">购物车</text>
		</view>
    <!-- 购物车商品信息区域 -->
    <uni-swipe-action>
      <block v-for="(goods, i) in cart" :key="i">
        <uni-swipe-action-item :options="options" @click="swiperItemClickhandler(goods)">
          <my-goods :goods="goods" :showRadio="true" @radio-change="radioChangeHandler" :showNum="true" @num-change="numberChange"></my-goods>
        </uni-swipe-action-item>
      </block>
    </uni-swipe-action>
    <!-- 自定义结算组件 -->
    <my-settle></my-settle>
	</view>
  <!-- 空白购物车的页面 -->
  <view class="empty-box" v-else>
    <image src="/static/cart_empty@2x.png" class="empty-cart"></image>
    <text class="tip-text">空空如也~</text>
  </view>
</template>

<script>
import tabbarMix from "@/mixins/tabbar-badge.js"
import {mapState, mapMutations} from 'vuex'
	export default {
    mixins: [tabbarMix],
    computed: {
      // 将m_cart模块中的cart映射到当前页面进行使用
      ...mapState('m_cart', ['cart'])
    },
		data() {
			return {
				options: [
          {
            text: '删除',
            style: {
              backgroundColor: '#C00000'
            }
          }
        ]
			}
	  },
    methods: {
      ...mapMutations('m_cart', ['updateGoodsState', 'updateGoodsCount', 'removeGoodsById']),
      // 修改购物车的状态
      radioChangeHandler (e) {
        this.updateGoodsState(e)
      },
      // 绑定购物车输入框的数据
      numberChange (e) {
        this.updateGoodsCount(e)
      },
      // 删除购物车中的商品
      swiperItemClickhandler (goods) {
        this.removeGoodsById(goods.goods_id)
      }
    }
  }
</script>

<style lang="scss">
  .cart-container {
    padding-bottom: 50px;
  }
.cart-title{
  padding-left: 5px;
  height: 40px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid #efefef;
  .cart-title-text{
    font-size: 14px;
    margin-left: 10px;
  }
}
.empty-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 150px;
  .empty-cart {
    width: 90px;
    height: 90px;
  }
  .tip-text {
    font-size: 12px;
    color: gray;
    margin-top: 15px;
  }
}
</style>
